Amana Dryer Error Code SH

SH means the control board has detected either a shorted thermistor circuit or a temperature above 175°F near the thermistor. In response, the control enters a safety shutdown and stops the dryer from running. The issue can be a wiring short between the control and thermistor, a failed thermistor, or an actual overheating condition caused by restricted airflow.

Start by disconnecting power, then remove the front panel and control hood to access the wiring between the control board and thermistor. Visually inspect for any pinched, burned, or shorted wires and repair or replace the harness if needed. Next, use a multimeter to measure resistance across the thermistor terminals. A reading near zero ohms indicates a shorted thermistor that needs replacement. If the wiring and thermistor test normal, check that the lint trap and exhaust duct are fully clear before suspecting the control board.

Yes. If airflow is restricted enough by a clogged lint trap or blocked exhaust duct, temperatures at the thermistor location can rise above 175°F, triggering the SH shutdown even when the thermistor and wiring are both in good condition. Before replacing any parts, clean the lint trap and inspect the full length of the exhaust duct for blockages. If clearing the vent resolves the SH code, the thermistor and wiring did their jobs correctly.

No. The SH code triggers a safety shutdown specifically because the control has detected a condition that could lead to overheating or fire. You should not attempt to bypass or ignore the shutdown. Leave the dryer off and unplugged until the cause is diagnosed and corrected.

If a thermistor is the cause, the part typically costs between $10 and $30, making it one of the more affordable dryer repairs if you are comfortable doing it yourself. A wiring harness replacement can range from $20 to $60 for the part. If a professional appliance technician handles the repair, expect to add $75 to $150 in labor depending on your area. Control board replacement is the most expensive scenario, often running $100 to $200 for the part alone.